我国首套退役空间站舱外服随神二十飞船返回地球

Core Insights - The Chinese space station's extravehicular suit B has successfully completed 20 extravehicular activities, marking it as the first retired space suit of China's space station [1][2] - The suit, which weighs over 100 kilograms, was launched on May 29, 2021, and was designed for a lifespan of three years with a minimum of 15 extravehicular activities [1] - The suit has exceeded its design lifespan, achieving a record of 9 hours for a single extravehicular activity and meeting the extended goal of "4 years and 20 times" [1] Group 1 - The extravehicular suit B is the first suit to have executed extravehicular tasks and will provide significant scientific research value and commemorative significance upon its return [2] - Research teams will conduct tests and analyses to gather first-hand data for future improvements and extensions of the suit's design [2] - Technical studies will focus on in-orbit maintenance, repair design, reliability growth, and material degradation, enhancing the safety and reliability of the suits [2]